fkie_cve-2024-50202
Vulnerability from fkie_nvd
Published
2024-11-08 06:15
Modified
2024-11-19 16:12
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: propagate directory read errors from nilfs_find_entry() Syzbot reported that a task hang occurs in vcs_open() during a fuzzing test for nilfs2. The root cause of this problem is that in nilfs_find_entry(), which searches for directory entries, ignores errors when loading a directory page/folio via nilfs_get_folio() fails. If the filesystem images is corrupted, and the i_size of the directory inode is large, and the directory page/folio is successfully read but fails the sanity check, for example when it is zero-filled, nilfs_check_folio() may continue to spit out error messages in bursts. Fix this issue by propagating the error to the callers when loading a page/folio fails in nilfs_find_entry(). The current interface of nilfs_find_entry() and its callers is outdated and cannot propagate error codes such as -EIO and -ENOMEM returned via nilfs_find_entry(), so fix it together.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4b3dc9e7e604be98a222e9f941f5e93798ca475Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb857ae1efd3138c653239ed1e7aef14e1242c81Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12


To clipboard 

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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: propagate directory read errors from nilfs_find_entry()\n\nSyzbot reported that a task hang occurs in vcs_open() during a fuzzing\ntest for nilfs2.\n\nThe root cause of this problem is that in nilfs_find_entry(), which\nsearches for directory entries, ignores errors when loading a directory\npage/folio via nilfs_get_folio() fails.\n\nIf the filesystem images is corrupted, and the i_size of the directory\ninode is large, and the directory page/folio is successfully read but\nfails the sanity check, for example when it is zero-filled,\nnilfs_check_folio() may continue to spit out error messages in bursts.\n\nFix this issue by propagating the error to the callers when loading a\npage/folio fails in nilfs_find_entry().\n\nThe current interface of nilfs_find_entry() and its callers is outdated\nand cannot propagate error codes such as -EIO and -ENOMEM returned via\nnilfs_find_entry(), so fix it together.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: propagar errores de lectura de directorio desde nilfs_find_entry() Syzbot informó que se produce un bloqueo de tarea en vcs_open() durante una prueba de fuzzing para nilfs2. La causa raíz de este problema es que en nilfs_find_entry(), que busca entradas de directorio, ignora los errores cuando falla la carga de una página/folio de directorio a través de nilfs_get_folio(). Si las imágenes del sistema de archivos están dañadas, y el i_size del inodo del directorio es grande, y la página/folio del directorio se lee correctamente pero falla la comprobación de cordura, por ejemplo, cuando está llena de ceros, nilfs_check_folio() puede seguir arrojando mensajes de error en ráfagas. Solucione este problema propagando el error a los llamadores cuando falla la carga de una página/folio en nilfs_find_entry(). La interfaz actual de nilfs_find_entry() y sus llamadores está desactualizada y no puede propagar códigos de error como -EIO y -ENOMEM devueltos a través de nilfs_find_entry(), así que arréglenlo juntos.",
      },
   ],
   id: "CVE-2024-50202",
   lastModified: "2024-11-19T16:12:17.660",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-11-08T06:15:16.723",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
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      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-755",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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